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Formations of sedimentary rocks?

hi please give me details on; Alluvial/ placer deposits, evaporates and chemical precipitates.

* how it forms

* What processes/ agents/ systems are involved

* where you would find the deposits

* what mineral resources could be found

* what uses they may have

Please don't write too much, as it's only help for my AS environmental studies! Thanks for your time in advance :)

1 Answer

Relevance
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